I am using the YouTube API in UIWebView.
I have created a NSString with the HTML5 player that I load in the UIWebView. Everything works perfectly on iPhone 5 and iPad.
But, if I test the app using an iPhone 4, the player returns the buffering state all the time. Only if I explicitly press the play button, the player starts playing, without stopping again for buffering. It seems that although the video has been buffered, the player still gives me this state.
Is anyone aware of this problem? Any idea?
Thank you very much in advance!!
In LBYouTubePlayerViewController.m file
Replace Following method on yr old Method....
then test...
-(NSURL*)_extractYouTubeURLFromFile:(NSString *)html error:(NSError *__autoreleasing *)error {
NSString *JSONStart = nil;
// NSString *JSONStartFull = #"ls.setItem('PIGGYBACK_DATA', \")]}'";
NSString *JSONStartFull = #"bootstrap_data = \")]}'";
NSString *JSONStartShrunk = [JSONStartFull stringByReplacingOccurrencesOfString:#" " withString:#""];
if ([html rangeOfString:JSONStartFull].location != NSNotFound)
JSONStart = JSONStartFull;
else if ([html rangeOfString:JSONStartShrunk].location != NSNotFound)
JSONStart = JSONStartShrunk;
if (JSONStart != nil) {
NSScanner* scanner = [NSScanner scannerWithString:html];
[scanner scanUpToString:JSONStart intoString:nil];
[scanner scanString:JSONStart intoString:nil];
NSString *JSON = nil;
[scanner scanUpToString:#"}\";" intoString:&JSON];
JSON = [NSString stringWithFormat:#"%#}",JSON]; // Add closing bracket } to get vallid JSON again
// [scanner scanUpToString:#"\");" intoString:&JSON];
JSON = [self _unescapeString:JSON];
NSError* decodingError = nil;
NSDictionary* JSONCode = nil;
// First try to invoke NSJSONSerialization (Thanks Mattt Thompson)
id NSJSONSerializationClass = NSClassFromString(#"NSJSONSerialization");
SEL NSJSONSerializationSelector = NSSelectorFromString(#"dataWithJSONObject:options:error:");
if (NSJSONSerializationClass && [NSJSONSerializationClass respondsToSelector:NSJSONSerializationSelector]) {
JSONCode = [NSJSONSerialization JSONObjectWithData:[JSON dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingAllowFragments error:&decodingError];
}
else {
JSONCode = [JSON objectFromJSONStringWithParseOptions:JKParseOptionNone error:&decodingError];
}
if (decodingError) {
// Failed
*error = decodingError;
}
else {
// Success
NSDictionary *dict = [JSONCode objectForKey:#"content"];
NSDictionary *dictTemp = [dict objectForKey:#"video"];
NSArray* videos = [dictTemp objectForKey:#"fmt_stream_map"];
NSString* streamURL = nil;
if (videos.count) {
NSString* streamURLKey = #"url";
if (self.quality == LBYouTubePlayerQualityLarge) {
streamURL = [[videos objectAtIndex:0] objectForKey:streamURLKey];
}
else if (self.quality == LBYouTubePlayerQualityMedium) {
unsigned int index = MAX(0, videos.count-2);
streamURL = [[videos objectAtIndex:index] objectForKey:streamURLKey];
}
else {
streamURL = [[videos lastObject] objectForKey:streamURLKey];
}
}
if (streamURL) {
return [NSURL URLWithString:streamURL];
}
else {
*error = [NSError errorWithDomain:kLBYouTubePlayerControllerErrorDomain code:2 userInfo:[NSDictionary dictionaryWithObject:#"Couldn't find the stream URL." forKey:NSLocalizedDescriptionKey]];
}
}
}
else {
*error = [NSError errorWithDomain:kLBYouTubePlayerControllerErrorDomain code:3 userInfo:[NSDictionary dictionaryWithObject:#"The JSON data could not be found." forKey:NSLocalizedDescriptionKey]];
}
return nil;
}
How do I parse HTML file?
I'm getting an HTML file in the below code,I just want to get data in between BinarySecurityToken XML node.
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
if(_data)
{
//Here am getting the below HTML content
NSString* content = [[NSString alloc] initWithData:_data
encoding:NSUTF8StringEncoding];
}
}
<input type="hidden" name="wa" value="wsignin1.0" />
<input type="hidden" name="wresult"
value="<t:RequestSecurityTokenResponse xmlns:t="http://schemas.xmlsoap.org/ws/2005/02/trust">
<t:Lifetime>
<wsu:Created >2013-04-29T11:50:29.895Z</wsu:Created>
<wsu:Expires>2013-04-29T12:00:29.895Z</wsu:Expires>
</t:Lifetime>
<wsp:AppliesTo>
<EndpointReference>
<Address>urn:orin.converse</Address>
</EndpointReference></wsp:AppliesTo>
<t:RequestedSecurityToken>
<wsse:BinarySecurityToken>
aHR0cCUzYSUyZiUyZnNjaGVtYWd0Sjk0JTNk
</wsse:BinarySecurityToken>
Any ideas? Thanks in advance.
You can get using this code
NSRange divRange = [content rangeOfString:#"<wsse:BinarySecurityToken>" options:NSCaseInsensitiveSearch];
if (divRange.location != NSNotFound)
{
NSRange endDivRange;
endDivRange.location = divRange.length + divRange.location;
endDivRange.length = [content length] - endDivRange.location;
endDivRange = [content rangeOfString:#"</wsse:BinarySecurityToken>" options:NSCaseInsensitiveSearch range:endDivRange];
if (endDivRange.location != NSNotFound)
{
divRange.location += divRange.length;
divRange.length = endDivRange.location - divRange.location;
NSLog(#"BinarySecurityToken : %#",[content substringWithRange:divRange]);
}
}
Output :
aHR0cCUzYSUyZiUyZnNjaGVtYWd0Sjk0JTNk
You need and XML parser for that.
There's a tutorial here
For this particular case you can get the ranges of <wsse:BinarySecurityToken> and </wsse:BinarySecurityToken>, construct new range that will provide you location of the token, and get substring in that range.
Sample code:
NSRange openingTagRange = [htmlString rangeOfString:#"<wsse:BinarySecurityToken>"];
NSRange closingTagRange = [htmlString rangeOfString:#"</wsse:BinarySecurityToken>"];
NSRange tokenRange = NSMakeRange(openingTagRange.location + openingTagRange.length, closingTagRange.location - (openingTagRange.location + openingTagRange.length));
NSString *token = [htmlString substringWithRange:tokenRange];
Since your input comes from outside, you should probably check if the ranges' locations are not equal to NSNotFound.
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"index" ofType:#"html"];
NSData * data = [NSData dataWithContentsOfFile:filePath];
TFHpple * tutorialsParser = [[TFHpple alloc] initWithHTMLData:data];
NSString *query = #"//div[#id='BinarySecurityToken']";
NSArray *nodes = [tutorialsParser searchWithXPathQuery:query];
for (TFHppleElement * element in nodes) {
NSLog(#"%#", element);
NSLog(#"%#", [element tagName]);
NSLog(#"%#", [element attributes]);
NSLog(#"%#", [element children]);
for (TFHppleElement *childElement in [element children]) {
NSLog(#"%#", childElement);
}
}
hope this will help you For more try this blog and Git Project Resource may help you and
Good blog by RAYWENDERLICH
or another option if you have all the HTML data in NSString you can get data between specific NSString with this function.
-(NSString*)stringBetweenString:(NSString*)start andString:(NSString)end {
NSRange startRange = [self rangeOfString:start];
if (startRange.location != NSNotFound) {
NSRange targetRange;
targetRange.location = startRange.location + startRange.length;
targetRange.length = [self length] - targetRange.location;
NSRange endRange = [self rangeOfString:end options:0 range:targetRange];
if (endRange.location != NSNotFound) {
targetRange.length = endRange.location - targetRange.location;
return [self substringWithRange:targetRange];
}
}
return nil;
}
I am parsing an itunes rss feed with JSON but I have run into a problem. The following code is running properly for one the movieName output but I still don't get the movieSummary output.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
allDataDictionary = [NSJSONSerialization JSONObjectWithData:webData options:0 error:nil];
feed = [allDataDictionary objectForKey:#"feed"];
arrayOfEntry = [feed objectForKey:#"entry"];
for (NSDictionary *dictionTitle in arrayOfEntry) {
NSDictionary *title = [dictionTitle objectForKey:#"title"];
NSString *labelTitle = [title objectForKey:#"label"];
[arrayLable addObject:labelTitle];
NSDictionary *summary = [dictionTitle objectForKey:#"summary"];
NSString *labelSummary = [summary objectForKey:#"label"];
[arraySummary addObject:labelSummary];
}
movieName.text = [arrayLable objectAtIndex:0];
movieSummary.text = [arraySummary objectAtIndex:0]; //This is not displaying
}
Here is the link that I am parsing: http://itunes.apple.com/us/rss/topmovies/limit=300/json
I run into this situation a lot. I use something like this. Replace your code
NSString *labelTitle = [title objectForKey:#"label"];
[arrayLable addObject:labelTitle];
with
NSString * labelTitle = [ [ title objectForKey:#"label" ] ifNullThenNil ] ;
[ arrayLabel addObject:labelTitle ? labelTitle : #"" ] ; // you could also use #"<unknown>" or similar instead of #""
where -ifNullThenNil is provided via category:
#implementation NSObject (IfNullThenNil)
-(id)ifNullThenNil { return self ; }
#end
#implementation NSNull (IfNullThenNil)
-(id)ifNullThenNil { return nil ; }
#end
The problem was that when I was adding the strings to the Array that it sometimes contained NULL's thus the following code helped me out
if ([[arrayName objectAtIndex:0] isKindOfClass:[NSNull class]]) {
labelName.text = #"This is NULL";
} else {
[arrayName addObject:labelName];
}
if ([[arraySummary objectAtIndex:0] isKindOfClass:[NSNull class]]) {
labelSummary.text = #"This is NULL";
} else {
[arraySummary addObject:labelSummary];
}
i am using facebook graph api in ios to share a news feed from iphone. But i get the following error:
{com.facebook.sdk:ParsedJSONResponseKey={
body = {
error = {
code = 2500;
message = "Unknown path components: /http://newswatch.nationalgeographic.com/2013/01/20/top-25-wild-bird-photographs-of-the-week-34;
type = OAuthException;
};
};
code = 400;
}, com.facebook.sdk:HTTPStatusCode=400}
following is part of my code to share a newsfeed on btnClick:
if ([strType isEqualToString:#"link"]) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"caption"];
if (text == nil) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"name"];
}
if (text == nil) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"story"];
}
NSDictionary *dict = [resultArrFeed objectAtIndex:selectedIndex];
dic=[NSDictionary dictionaryWithObjectsAndKeys:text,#"message",nil];
NSLog(#"%#", dict);
// NSString *str = [dict valueForKey:#"link"];
NSString *str = [dict valueForKey:#"link"];
request=[NSMutableString stringWithString: #"me/feed/"];
[request appendString:str];
NSLog(#"appended : %#", request);
}
same code works if i try to share a photo type of newsfeed. where am i getting wrong? how do i solve this problem?
i got the error: correct code:
if ([strType isEqualToString:#"link"] || [strType isEqualToString:#"video"]) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"caption"];
if (text == nil) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"name"];
}
if (text == nil) {
text = [[resultArrFeed objectAtIndex:selectedIndex] objectForKey:#"story"];
}
NSDictionary *dict = [resultArrFeed objectAtIndex:selectedIndex];
NSLog(#"%#", dict);
NSString *str = [dict valueForKey:#"link"];
dic=[NSDictionary dictionaryWithObjectsAndKeys:str,#"link",nil];
request=[NSMutableString stringWithString: #"me/feed/"];
NSLog(#" %#", dic);
}
in request we only need to pass me/feed and in params of FBRequest *friendRequest = [FBRequest requestWithGraphPath:request parameters:dic HTTPMethod:#"POST"]; we need to pass link=http://...
I have a URL like myApp://action/1?parameter=2&secondparameter=3
With the property query I get following part of my URL
parameter=2&secondparameter=3
Is there any way easy to put this in a NSDictionary or an Array?
Thx a lot
You can use queryItems in URLComponents.
When you get this property’s value, the NSURLComponents class parses the query string and returns an array of NSURLQueryItem objects, each of which represents a single key-value pair, in the order in which they appear in the original query string.
Swift
let url = "http://example.com?param1=value1¶m2=param2"
let queryItems = URLComponents(string: url)?.queryItems
let param1 = queryItems?.filter({$0.name == "param1"}).first
print(param1?.value)
Alternatively, you can add an extension on URL to make things easier.
extension URL {
var queryParameters: QueryParameters { return QueryParameters(url: self) }
}
class QueryParameters {
let queryItems: [URLQueryItem]
init(url: URL?) {
queryItems = URLComponents(string: url?.absoluteString ?? "")?.queryItems ?? []
print(queryItems)
}
subscript(name: String) -> String? {
return queryItems.first(where: { $0.name == name })?.value
}
}
You can then access the parameter by its name.
let url = "http://example.com?param1=value1¶m2=param2"
print(url.queryParameters["param1"])
I had reason to write some extensions for this behavior that might come in handy. First the header:
#import <Foundation/Foundation.h>
#interface NSString (XQueryComponents)
- (NSString *)stringByDecodingURLFormat;
- (NSString *)stringByEncodingURLFormat;
- (NSMutableDictionary *)dictionaryFromQueryComponents;
#end
#interface NSURL (XQueryComponents)
- (NSMutableDictionary *)queryComponents;
#end
#interface NSDictionary (XQueryComponents)
- (NSString *)stringFromQueryComponents;
#end
These methods extend NSString, NSURL, and NSDictionary, to allow you to convert to and from query components strings and dictionary objects containing the results.
Now the related .m code:
#import "XQueryComponents.h"
#implementation NSString (XQueryComponents)
- (NSString *)stringByDecodingURLFormat
{
NSString *result = [self stringByReplacingOccurrencesOfString:#"+" withString:#" "];
result = [result stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
return result;
}
- (NSString *)stringByEncodingURLFormat
{
NSString *result = [self stringByReplacingOccurrencesOfString:#" " withString:#"+"];
result = [result stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
return result;
}
- (NSMutableDictionary *)dictionaryFromQueryComponents
{
NSMutableDictionary *queryComponents = [NSMutableDictionary dictionary];
for(NSString *keyValuePairString in [self componentsSeparatedByString:#"&"])
{
NSArray *keyValuePairArray = [keyValuePairString componentsSeparatedByString:#"="];
if ([keyValuePairArray count] < 2) continue; // Verify that there is at least one key, and at least one value. Ignore extra = signs
NSString *key = [[keyValuePairArray objectAtIndex:0] stringByDecodingURLFormat];
NSString *value = [[keyValuePairArray objectAtIndex:1] stringByDecodingURLFormat];
NSMutableArray *results = [queryComponents objectForKey:key]; // URL spec says that multiple values are allowed per key
if(!results) // First object
{
results = [NSMutableArray arrayWithCapacity:1];
[queryComponents setObject:results forKey:key];
}
[results addObject:value];
}
return queryComponents;
}
#end
#implementation NSURL (XQueryComponents)
- (NSMutableDictionary *)queryComponents
{
return [[self query] dictionaryFromQueryComponents];
}
#end
#implementation NSDictionary (XQueryComponents)
- (NSString *)stringFromQueryComponents
{
NSString *result = nil;
for(__strong NSString *key in [self allKeys])
{
key = [key stringByEncodingURLFormat];
NSArray *allValues = [self objectForKey:key];
if([allValues isKindOfClass:[NSArray class]])
for(__strong NSString *value in allValues)
{
value = [[value description] stringByEncodingURLFormat];
if(!result)
result = [NSString stringWithFormat:#"%#=%#",key,value];
else
result = [result stringByAppendingFormat:#"&%#=%#",key,value];
}
else {
NSString *value = [[allValues description] stringByEncodingURLFormat];
if(!result)
result = [NSString stringWithFormat:#"%#=%#",key,value];
else
result = [result stringByAppendingFormat:#"&%#=%#",key,value];
}
}
return result;
}
#end
Something like that:
NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
for (NSString *param in [url componentsSeparatedByString:#"&"]) {
NSArray *elts = [param componentsSeparatedByString:#"="];
if([elts count] < 2) continue;
[params setObject:[elts lastObject] forKey:[elts firstObject]];
}
Note : This is sample code. All error cases are not managed.
Try this ;)!
NSString *query = #"parameter=2&secondparameter=3"; // replace this with [url query];
NSArray *components = [query componentsSeparatedByString:#"&"];
NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];
for (NSString *component in components) {
NSArray *subcomponents = [component componentsSeparatedByString:#"="];
[parameters setObject:[[subcomponents objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
forKey:[[subcomponents objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
}
All previous posts do not do the url encoding properly. I would suggest the following methods:
+(NSString*)concatenateQuery:(NSDictionary*)parameters {
if([parameters count]==0) return nil;
NSMutableString* query = [NSMutableString string];
for(NSString* parameter in [parameters allKeys])
[query appendFormat:#"&%#=%#",[parameter stringByAddingPercentEncodingWithAllowedCharacters:NSCharacterSet.URLQueryAllowedCharacterSet],[[parameters objectForKey:parameter] stringByAddingPercentEncodingWithAllowedCharacters:NSCharacterSet.URLQueryAllowedCharacterSet]];
return [[query substringFromIndex:1] copy];
}
+(NSDictionary*)splitQuery:(NSString*)query {
if([query length]==0) return nil;
NSMutableDictionary* parameters = [NSMutableDictionary dictionary];
for(NSString* parameter in [query componentsSeparatedByString:#"&"]) {
NSRange range = [parameter rangeOfString:#"="];
if(range.location!=NSNotFound)
[parameters setObject:[[parameter substringFromIndex:range.location+range.length] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] forKey:[[parameter substringToIndex:range.location] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
else [parameters setObject:[[NSString alloc] init] forKey:[parameter stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
}
return [parameters copy];
}
According to the already very clean answer of Onato I wrote an extension for NSURL in Swift where you can get a query param like this:
e.g. the URL contains the pair param=some_value
let queryItem = url.queryItemForKey("param")
let value = queryItem.value // would get String "someValue"
The extension looks like:
extension NSURL {
var allQueryItems: [NSURLQueryItem] {
get {
let components = NSURLComponents(URL: self, resolvingAgainstBaseURL: false)!
let allQueryItems = components.queryItems!
return allQueryItems as [NSURLQueryItem]
}
}
func queryItemForKey(key: String) -> NSURLQueryItem? {
let predicate = NSPredicate(format: "name=%#", key)!
return (allQueryItems as NSArray).filteredArrayUsingPredicate(predicate).first as? NSURLQueryItem
}
}
Here is the extension in swift:
extension NSURL{
func queryParams() -> [String:AnyObject] {
var info : [String:AnyObject] = [String:AnyObject]()
if let queryString = self.query{
for parameter in queryString.componentsSeparatedByString("&"){
let parts = parameter.componentsSeparatedByString("=")
if parts.count > 1{
let key = (parts[0] as String).stringByReplacingPercentEscapesUsingEncoding(NSUTF8StringEncoding)
let value = (parts[1] as String).stringByReplacingPercentEscapesUsingEncoding(NSUTF8StringEncoding)
if key != nil && value != nil{
info[key!] = value
}
}
}
}
return info
}
}
The preferred way to deal with URLs is now NSURLComponents. In particular the queryItems property which returns an NSArray of params.
If you want the params in a NSDictionary, here's a method:
+(NSDictionary<NSString *, NSString *>*)queryParamsFromURL:(NSURL*)url
{
NSURLComponents* urlComponents = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:NO];
NSMutableDictionary<NSString *, NSString *>* queryParams = [NSMutableDictionary<NSString *, NSString *> new];
for (NSURLQueryItem* queryItem in [urlComponents queryItems])
{
if (queryItem.value == nil)
{
continue;
}
[queryParams setObject:queryItem.value forKey:queryItem.name];
}
return queryParams;
}
Caveat: URLs can have repeated params, but the dictionary will only contain the last value of any duplicated param. If that is undesirable, use the queryItems array directly.
For those using Bolts Framework you can use:
NSDictionary *parameters = [BFURL URLWithURL:yourURL].inputQueryParameters;
Remember to import:
#import <Bolts/BFURL.h>
If you happen to have Facebook SDK in your project, you also have Bolts. Facebook is using this framework as a dependency.
Swift 2.1
Oneliner:
"p1=v1&p2=v2".componentsSeparatedByString("&").map {
$0.componentsSeparatedByString("=")
}.reduce([:]) {
(var dict: [String:String], p) in
dict[p[0]] = p[1]
return dict
}
// ["p1": "v1", "p2": "v2"]
Used as an extension on NSURL:
extension NSURL {
/**
* URL query string as dictionary. Empty dictionary if query string is nil.
*/
public var queryValues : [String:String] {
get {
if let q = self.query {
return q.componentsSeparatedByString("&").map {
$0.componentsSeparatedByString("=")
}.reduce([:]) {
(var dict: [String:String], p) in
dict[p[0]] = p[1]
return dict
}
} else {
return [:]
}
}
}
}
Example:
let url = NSURL(string: "http://example.com?p1=v1&p2=v2")!
let queryDict = url.queryValues
// ["p1": "v1", "p2": "v2"]
Please note, if using OS X 10.10 or iOS 8 (or later), it's probably better to use NSURLComponents and the queryItems property and create the dictionary from the NSURLQueryItems directly.
Here's a NSURLComponents based NSURL extension solution:
extension NSURL {
/// URL query string as a dictionary. Empty dictionary if query string is nil.
public var queryValues : [String:String] {
get {
guard let components = NSURLComponents(URL: self, resolvingAgainstBaseURL: false) else {
return [:]
}
guard let queryItems = components.queryItems else {
return [:]
}
var result:[String:String] = [:]
for q in queryItems {
result[q.name] = q.value
}
return result
}
}
}
A footnote to the NSURL extension is that it's actually possible in Swift to give the property the same name as the existing string property—query. I didn't know until I tried it, but the polymorphism in Swift lets you differ only on the return type. So if the extended NSURL property is public var query: [String:String] it works. I didn't use this in the example as I find it a little bit crazy, but it does work ...
I published a simple class doing the job under MIT:
https://github.com/anegmawad/URLQueryToCocoa
With it you can have arrays and objects in the query, which are collected and glued together
For Example
users[0][firstName]=Amin&users[0][lastName]=Negm&name=Devs&users[1][lastName]=Kienle&users[1][firstName]=Christian
will become:
#{
name : #"Devs",
users :
#[
#{
firstName = #"Amin",
lastName = #"Negm"
},
#{
firstName = #"Christian",
lastName = #"Kienle"
}
]
}
You can think of it as a URL query counterpart of NSJSONSerializer.
It looks that you are using it to process incoming data from another iOS application. If so, this is what I use for the same purpose.
Initial call (e.g. in external application):
UIApplication *application = [UIApplication sharedApplication];
NSURL *url = [NSURL URLWithString:#"myApp://action/1?parameter=2&secondparameter=3"];
if ([application canOpenURL:url]) {
[application openURL:url];
NSLog(#"myApp is installed");
} else {
NSLog(#"myApp is not installed");
}
Method to extract QueryString data from NSURL and save as NSDictionary:
-(NSDictionary *) getNSDictionaryFromQueryString:(NSURL *)url {
NSMutableDictionary *result = [[NSMutableDictionary alloc] init];
NSRange needle = [url.absoluteString rangeOfString:#"?" options:NSCaseInsensitiveSearch];
NSString *data = nil;
if(needle.location != NSNotFound) {
NSUInteger start = needle.location + 1;
NSUInteger end = [url.absoluteString length] - start;
data = [url.absoluteString substringWithRange:NSMakeRange(start, end)];
}
for (NSString *param in [data componentsSeparatedByString:#"&"]) {
NSArray *keyvalue = [param componentsSeparatedByString:#"="];
if([keyvalue count] == 2){
[result setObject:[keyvalue objectAtIndex:1] forKey:[keyvalue objectAtIndex:0]];
}
}
return result;
}
Usage:
NSDictionary *result = [self getNSDictionaryFromQueryString:url];
This class is a nice solution for url parsing.
.h file
#interface URLParser : NSObject {
NSArray *variables;
}
#property (nonatomic, retain) NSArray *variables;
- (id)initWithURLString:(NSString *)url;
- (NSString *)valueForVariable:(NSString *)varName;
#end
.m file
#import "URLParser.h"
#implementation URLParser
#synthesize variables;
- (id) initWithURLString:(NSString *)url{
self = [super init];
if (self != nil) {
NSString *string = url;
NSScanner *scanner = [NSScanner scannerWithString:string];
[scanner setCharactersToBeSkipped:[NSCharacterSet characterSetWithCharactersInString:#"&?"]];
NSString *tempString;
NSMutableArray *vars = [NSMutableArray new];
[scanner scanUpToString:#"?" intoString:nil]; //ignore the beginning of the string and skip to the vars
while ([scanner scanUpToString:#"&" intoString:&tempString]) {
[vars addObject:[tempString copy]];
}
self.variables = vars;
}
return self;
}
- (NSString *)valueForVariable:(NSString *)varName {
for (NSString *var in self.variables) {
if ([var length] > [varName length]+1 && [[var substringWithRange:NSMakeRange(0, [varName length]+1)] isEqualToString:[varName stringByAppendingString:#"="]]) {
NSString *varValue = [var substringFromIndex:[varName length]+1];
return varValue;
}
}
return nil;
}
#end
Hendrik wrote a nice example for extension in this question, however I had to re-write it to not use any objective-c library methods. Using NSArray in swift is not the correct approach.
This is the result, all swift and a bit more safe. The usage example will be less lines of code with Swift 1.2.
public extension NSURL {
/*
Set an array with all the query items
*/
var allQueryItems: [NSURLQueryItem] {
get {
let components = NSURLComponents(URL: self, resolvingAgainstBaseURL: false)!
if let allQueryItems = components.queryItems {
return allQueryItems as [NSURLQueryItem]
} else {
return []
}
}
}
/**
Get a query item form the URL query
:param: key The parameter to fetch from the URL query
:returns: `NSURLQueryItem` the query item
*/
public func queryItemForKey(key: String) -> NSURLQueryItem? {
let filteredArray = filter(allQueryItems) { $0.name == key }
if filteredArray.count > 0 {
return filteredArray.first
} else {
return nil
}
}
}
Usage:
let queryItem = url.queryItemForKey("myItem")
Or, more detailed usage:
if let url = NSURL(string: "http://www.domain.com/?myItem=something") {
if let queryItem = url.queryItemForKey("myItem") {
if let value = queryItem.value {
println("The value of 'myItem' is: \(value)")
}
}
}
try this:
-(NSDictionary *)getUrlParameters:(NSString *)url{
NSArray *justParamsArr = [url componentsSeparatedByString:#"?"];
url = [justParamsArr lastObject];
NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
for (NSString *param in [url componentsSeparatedByString:#"&"]) {
NSArray *elts = [param componentsSeparatedByString:#"="];
if([elts count] < 2) continue;
[params setObject:[elts lastObject] forKey:[elts firstObject]];
}
return params;
}
Fairly compact approach:
func stringParamsToDict(query: String) -> [String: String] {
let params = query.components(separatedBy: "&").map {
$0.components(separatedBy: "=")
}.reduce(into: [String: String]()) { dict, pair in
if pair.count == 2 {
dict[pair[0]] = pair[1]
}
}
return params
}
Most robust solution if you are using a URL to pass data from the web app to the phone and you want to pass arrays, numbers, strings, ...
JSON encode your object in PHP
header("Location: myAppAction://".urlencode(json_encode($YOUROBJECT)));
And JSON decode the result in iOS
NSData *data = [[[request URL] host] dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *packed = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];